Consider muscle conditioning, a incredibly inspirational class with a freakishly gorgeous, motivating instructor, who knows surprising new ways to torture the living daylights out of every muscle fiber you’ve got. Listening to the thumping, throbbing soundtrack, and just by looking at him, you will judge your instructor harshly. He is too beautiful, too buff, and too smart to be nice. Don’t tell him I told you, but he’s just a teddy bear… Not that you’ll ever find that out in muscle conditioning. Oh no, he won’t even crack a smile.

Muscle conditioning suits a broad range of participants, from devoted “aerobiphiles” seeking a change of pace, to the hardcore lifters and weekend warriors who prefer an athletic cardio workout, and everyone else who seeks good, solid toning and strengthening without complicated choreography. Muscle conditioning’s focus is on high-volume strength and endurance training with weights, plus a mix of calisthenics, plyometrics, core balance, agility drills and abs to deliver overall body toning and calorie burning.

After class, when your muscles are burning, and you’re little arms and legs have given all they’ve got to give, and all you can think about is getting a smoothie at the juice bar…then you’ll see your instructor smile. You see, you’ve got to earn it.